Don't buy the Legacy version of the Ten-Wheelers if you can avoid it. There were some performance issues (not easily resolved as I recall) described on this forum. The TMCC, on the other hand, supposedly were just fine.
What issues are those? I have the early Legacy 10-Wheeler, it runs just fine. Other than replacing the 6-ohm smoke resistor with an 8-ohm resistor, I had no other performance issues.
After applying Pete's bushing fix to my newly acquired Legacy Mogul, it runs great as well. Great deal at $300 NIB.